Files
MiniGUI/src/include/hash.h
2019-11-13 11:53:59 +08:00

111 lines
3.1 KiB
C

///////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT NOTICE
//
// The following open source license statement does not apply to any
// entity in the Exception List published by FMSoft.
//
// For more information, please visit:
//
// https://www.fmsoft.cn/exception-list
//
//////////////////////////////////////////////////////////////////////////////
/*
* This file is part of MiniGUI, a mature cross-platform windowing
* and Graphics User Interface (GUI) support system for embedded systems
* and smart IoT devices.
*
* Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
* Copyright (C) 1998~2002, WEI Yongming
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Or,
*
* As this program is a library, any link to this program must follow
* GNU General Public License version 3 (GPLv3). If you cannot accept
* GPLv3, you need to be licensed from FMSoft.
*
* If you have got a commercial license of this program, please use it
* under the terms and conditions of the commercial license.
*
* For more information about the commercial license, please refer to
* <http://www.minigui.com/blog/minigui-licensing-policy/>.
*/
/*
** hash.h: header file of hash operations.
*/
#ifndef _MG_HASH_H
#define _MG_HASH_H
#ifdef __cplusplus
extern "C"
{
#endif
#define HASHTABLE_MIN_SIZE 32 /* default hash table size */
#define HASHTABLE_MAX_SIZE 40960
#define HASH_THREAD_SAFE 0x00000001 /* thread safe flag */
#define HASH_RESIZABLE 0x00000002 /* resizable flag */
typedef GHANDLE (*HASHFUNC) (GHANDLE key);
typedef BOOL (*EQUALFUNC) (GHANDLE keya, GHANDLE keyb);
typedef struct _HASHNODE
{
GHANDLE key;
GHANDLE value;
struct _HASHNODE *next;
} HASHNODE;
typedef struct _HASHTABLE
{
DWORD dwFlags;
HASHNODE **pNodes;
size_t size;
int nrNodes;
HASHFUNC pfnHash;
EQUALFUNC pfnEqual;
#ifdef _MGRM_THREADS
pthread_mutex_t lock;
#endif
} HASHTABLE;
HASHTABLE* HashTableCreate (void* memStart, size_t hash_size, BOOL bThreadSafe,
HASHFUNC hash_func, EQUALFUNC equal_func);
void HashTableDestroy (HASHTABLE *hash_table);
GHANDLE HashTableLookup (HASHTABLE *hash_table, GHANDLE key);
int HashTableInsert (HASHTABLE *hash_table, GHANDLE key, GHANDLE value);
BOOL HashTableRemove (HASHTABLE *hash_table, GHANDLE key);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _MG_HASH_H */